Wall-Mount Unit Supply Wiring; Figure 1.8 Circuit Routing Label - Bard D25A2PA Installation And Service Instructions Manual

All models covered by this installation
instruction require dual power sources:
VAC utility power to run the compressor, heat
and outdoor fan motor and -48 VDC power
to operate the indoor blower and DC free
cooling damper.
These units require a positive ground
-48 VDC copper conductor field wire
connection. Refer to the unit wiring diagram
for more information.
WARNING
!
Electrical shock hazard.
Have a properly trained individual perform
these tasks.
Failure to do so could result in electric shock
or death.
Refer to the unit rating plate or Table 1.1 on page
16 for wire sizing information and maximum fuse or
circuit breaker size. Each outdoor unit is marked with
a "Minimum Circuit Ampacity". The field wiring used
must be sized to carry that amount of current. All
models are suitable only for connection with copper
wire. Each unit and/or wiring diagram will be marked
"Use Copper Conductors Only". These instructions
must be adhered to. Refer to the National Electrical
Code (NEC) for complete current carrying capacity data
on the various insulation grades of wiring material. All
wiring must conform to NEC and all local codes.
The electrical data lists fuse and wire sizes (75°C
copper) for all models including the most commonly
used heater sizes. Also shown are the number of field
power circuits required for the various models with
heaters.
The unit rating plate lists a "Maximum Time Delay
Relay Fuse" or circuit breaker that is to be used with
the equipment. The correct size must be used for
proper circuit protection and also to assure that there
will be no nuisance tripping due to the momentary high
starting current of the compressor motor.

WALL-MOUNT UNIT SUPPLY WIRING

Route all field wires to the right of the wire shield as
shown in the circuit routing label found in Figure 1.8
(and also on the wall-mount units).
Run communication wires in separate conduit
whenever possible. If a unique installation occurs
where it is not possible to isolate the communication
wires, it is permissible to run communication wires
in a conduit which contains a dedicated VDC voltage
line. In all cases, the communication wires must be
shielded, twisted wire and utilize proper filtration at the
main communications board. It is never permissible to
run communication wires with VAC voltage lines.
See Figure 1.9 on page 17 to reference VAC and VDC
supply wiring landing points.
IMPORTANT: 230/208V 1 phase and 3 phase
equipment use dual primary voltage transformers. All
equipment leaves the factory wired on 240V tap. It is
very important that the correct voltage tap is used. For
208V operation, reconnect from 240V to 208V tap (see
Figure 1.10). The acceptable operating voltage range
for the 240 and 208V taps are: 240V Tap (253 – 216)
and 208 Tap (220 – 197).
REV. DATE
The disconnect access door on this unit may be locked
to prevent unauthorized access to the disconnect. To
convert for the locking capability, bend the tab located
in the bottom left-hand corner of the disconnect
opening under the disconnect access panel straight
out. This tab will now line up with the slot in the door.
When shut, a padlock may be placed through the hole
in the tab preventing entry.
FIGURE 1.8
Circuit Routing Label
NOTICE / AVIS
ROUTE ALL HIGH VOLTAGE FIELD
WIRES TO THE RIGHT OF THE WIRE
SHIELD AS SHOWN
ACHEMINER LES FILS HAUTE
TENSION SUR LA DROITE VERS LA
PROTECTION, COMME INDIQUÉ
VAC CIRCUIT BREAKER
/DISJONCTEUR
VDC CIRCUIT BREAKER
/DISJONCTEUR
5.000
WIRE SHIELD /
PROTECTION
7961-807
2.500
MATERIAL : OUTDOOR VINYL
BACKGROUND COLOR : WHITE / SAFETY BLUE
PRINTING COLOR : BLACK 1/8" LETTERING
SIZE : 2.500 X 5.000
FORMAT : ROLL
DESCRIPTION ECN NO DRN CHK APR
Manual 2100-643C
Page
WHITE 3/16" LETTERING
MAT'L
WIRING ROUTING LABEL
PART
NAME
7961-807 7961-807
PART DWG.
NO. NO.
DATE 7/21/2014
1:4 BD
SCALE DRAWN BY
SD CY Bard Mfg. Co.
Bryan, Ohio
CHECKED APPROVED
DISTRIBUTION 1 2 3 4 5
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